Improvement in platform-spring couplings



PARSELS & HEDGES. PlatformSpring Coupling.

` Noi 113,335` Patented April 4, 1871.

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BENJAMIN T. PABSELS AND JOHN L. ,HEDGESg OE HANOVER, NEW JERSEY.

Letters Patent No. 113,335, dated April 4, 1871.

IMPROVEMENT IN PLATFQRM-SPRING COUPLVIVNGS.

The Schedule referred to :in these Letters-Patent and making part of the same.

To all wh-om tt may concern Be -it known that we, BENJAMIN T. PARsELs and4 coupling taken through the line x x, fig. 2.

Figure 2 is a detail Vertical. section of the same taken through the line y y, iig. 1.

Similar letters of referencerindicate corresponding parts.

Our invention has for its object to furuislran improved coupling for platform-springs, which shall be simple in construction, strong, and durable, and which will allow the springs to lengthen under pressure without twisting or straining the springs; and

It consists iu the coupling constructed as hereinafter more fully described.

A represents the cross-spring, and

B the longitudinal spring, the ends of which are to be coupled together.

O is the central or main block of the coupling, through the upper part of which is formed a hole for the bolt D at right angles with the 4spring A, and through the lower part of which is formed a hole for the bolt E atright angles with the spring B and with the *bolt D. y

The bolt D also passes through holes inthe lower ends of the yokes F, the hole in one or both yokes F being made square,sov that the holt D will not turn in them.

Through holes in Athe upper ends'of the yokes F passes the bolt G, which also passes through holes in the lugs a', formed upon the end of the spring A, the

that the bolt G cannot turn in ther 'lhe upper part of the yokes F are made wide, so as to meet each other, as shown in lig. 2, to form a wide bearing for the bolt G.

If desired, the upper ends of the yokes F may be made narrow, and a thimble, sleeve, or washer interholes in one or both the lugs at being made square, so

- posed between them; but we prefer the construction rst described, as being less liable to wear the bolt and less liable toratlle.

The ends of the bolt E pass through holes in the upper ends of the yokes H, through holes in the lower ends of which the bolt I passes, which also pass through an eye formed upon the end of the spring B.

The holes in one'or both the yokes H through which the bolts E and I pass are made square, so that the said bolts cannot turn in the said yokes.

By this construction it will be observed that all theV bearings where there is any movement are made wide, to diminish the wear and prevent rattling.

This construction also 'allows the springs to lengthen under pressure without twisting or straining the springs.

Having thus ,described our invention, i We claim as new and desire to secure by Letters Patent- The cross-block C, combinedY with yokes F H and boltsrD E I, as and for the purpose speeilied.

, BENJAMIN T. PARSELS.

JOHN L. HEDGES.

Witnesses:

DAVID T. 000K, JOSEPH KITGHELL, Jr. 

